Metrohm 917 User Manual

28.7 Dosing and Liquid Handling
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917 Coulometer
Compensate
Because of the fact that the dosing units are interchangeable, the cou-
pling of the Dosino piston rod (spindle) exhibits a low mechanical toler-
ance that can be noticed when the piston changes its direction of
movement. This tolerance can be compensated with this function. A
short piston movement is first made in the same direction as the previ-
ous movement, which is then followed by a piston movement in the
reverse direction.
End volume
The whole cylinder content is ejected. The piston is lowered to the
maximum volume mark i.e. until 10'000 pulses have been dosed. This
command should be used for pipetting functions for emptying the cyl-
inder.
In-/Outlet
Selection of the port via which the Liquid Handling command is carried
out.
Selection Port 1 | Port 2 | Port 3 | Port 4
Port 1
Default value, when Function = Dose, Aspirate and End volume.
Port 2
Default value, when Function = Fill, Exchange position and
Change port.
Port 4
Default value, when Function = Eject and Compensate.
Volume
This parameter can only be edited with Function = Dose and Aspirate.
Volume which is dosed or aspirated.
Function = Dose:
Input range 0.00000 - 99999.9 mL
Default value 1.00000 mL
Function = Aspirate:
Input range 0.00000 - 50.0000 mL
Default value 1.00000 mL
Flow rate
This parameter can only be edited with Function = Dose, Fill, Aspirate,
Eject, Exchange position and End volume.
Rate at which it is dosed or filled.
Input range 0.01 - 166.00 mL/min

Metrohm 917 Specifications

General

Brand	Metrohm
Model	917
Category	Laboratory Equipment
Language	English